CN203436452U - Lacrimal passage catheter - Google Patents
Lacrimal passage catheter Download PDFInfo
- Publication number
- CN203436452U CN203436452U CN201320539204.3U CN201320539204U CN203436452U CN 203436452 U CN203436452 U CN 203436452U CN 201320539204 U CN201320539204 U CN 201320539204U CN 203436452 U CN203436452 U CN 203436452U
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- CN
- China
- Prior art keywords
- nasolacrimal duct
- lachrymal sac
- sac portion
- elastic yarn
- lacrimal passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a lacrimal passage catheter which comprises a lacrimal sac portion and a nasolacrimal duct. The lacrimal sac portion is located at the upper end of the nasolacrimal duct and comprises at least three elastic wires, the lower ends of the elastic wires are fixedly connected with the upper end of the nasolacrimal duct, the upper ends of the elastic wires are fixedly connected with a fixing ring, drainage gaps are formed between adjacent elastic wires, the elastic wires are arc-shaped and made of metal wires, and the surfaces of the elastic wires are provided with a silica gel layer. By means of the structure, the lacrimal sac portion is made of a memory metal material, and when the lacrimal passage catheter is implanted, the elastic wires are squeezed by the lacrimal passage and are straightened, so that implantation is easy to achieve, and a patient feels less pain; after the lacrimal sac portion reaches the lacrimal sac of the patient, the elastic wires recover to the original expansion state, effectively expand the lacrimal sac portion and do not cause stimulation to mucosa; the lacrimal passage catheter is good in drainage effect, tear fluid is led into the nasolacrimal duct through the drainage gaps between the elastic wires, drainage is finished thoroughly, and no tear fluid is left in the lacrimal sac.
Description
Technical field
This utility model relates to armarium technical field, specifically refers to a kind of Lacrimal passage tube.
Background technology
Lacrimal passage tube is used for the treatment of lacrimal passage disease, such as dacryocystisis etc., Lacrimal passage tube is roughly divided into two kinds, a kind of is the metal tube of early application, the material of metal tube is harder, when the length of metal tube is longer, be placed in nasal cavity sense of discomfort very strong, and owing to causing stimulation for nasal mucosa, thereby generation granulation hyperplasia, come into vogue at present and use the Lacrimal passage tube of silica gel material, but the Lacrimal passage tube fixed effect of pure silicon glue material is poor, traditional Lacrimal passage tube as shown in Figure 1, the cavity of lachrymal sac portion 1 hollow wherein, its side or upper end have opening, lachrymal sac portion 1 is in the lachrymal sac of human body, lachrymal sac portion 1 is in lachrymal sac is strutted, the opening on lachrymal sac surface is used for collecting tear, this kind of tear stains put while implanting more difficult, patient suffering is larger, and because tear is by certain viscosity, single opening is unfavorable for collecting tear, and because the effect of collection tear is poor, nasolacrimal duct 2 also needs to arrange conduction hole.
Summary of the invention
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, and when a kind of implantation is provided, patient suffering is few, with lachrymal sac laminating is good, patient's sense of discomfort is weak, non-stimulated for nasal mucosa, without the Lacrimal passage tube that conduction hole is set.
This Lacrimal passage tube, its main feature is, comprise lachrymal sac portion and nasolacrimal duct, this lachrymal sac portion is positioned at the upper end of this nasolacrimal duct, described lachrymal sac portion comprises at least three elastic yarns, the lower end of this elastic yarn is fixedly connected with the upper end of described nasolacrimal duct, the upper end of described elastic yarn is fixedly connected with retainer ring, and described elastic yarn is along the circumferential distribution of this retainer ring, described elastic yarn and the formed inner space of described retainer ring are described lachrymal sac portion, between described elastic yarn and adjacent elastic yarn, form drain gap; Described elastic yarn is arc, and this elastic yarn is tinsel, and the surface of this elastic yarn is provided with layer of silica gel.
Nasolacrimal duct in this Lacrimal passage tube is hollow pipe, described nasolacrimal duct comprises connection tube and nasal cavity pipe, this connection tube is positioned at the top of described nasolacrimal duct, and this nasal cavity pipe is positioned at the bottom of described nasolacrimal duct, and described connection tube and described nasal cavity pipe are integrated setting.
Elastic yarn in this Lacrimal passage tube and described retainer ring form the lachrymal sac portion of spheroid, and the cross-sectional diameter at the cross-sectional diameter at the described nearly described retainer ring place of lachrymal sac portion and the described nearly nasolacrimal duct of lachrymal sac portion place is all less than the cross-sectional diameter of this lachrymal sac portion mid portion.
The lachrymal sac portion that elastic yarn in this Lacrimal passage tube and described stationary annular are tapered, and the cross-sectional diameter at the nearly described retainer ring place of described lachrymal sac portion is greater than the cross-sectional diameter at the described nearly nasolacrimal duct of lachrymal sac portion place; Or the cross-sectional diameter at the described nearly described retainer ring place of lachrymal sac portion is less than the cross-sectional diameter at the described nearly nasolacrimal duct of lachrymal sac portion place.
Tinsel in this Lacrimal passage tube is memory wire.
Nasolacrimal duct in this Lacrimal passage tube is metal tube, and the inner surface of this nasolacrimal duct and outer surface are provided with layer of silica gel.
Retainer ring in this Lacrimal passage tube is becket, and the surface of this retainer ring is provided with layer of silica gel.
Adopted the Lacrimal passage tube of this structure, lachrymal sac portion has adopted the material of memory metal, when implanting, elastic yarn receives that lacrimal passage extruding straightens, thereby make to implant, is easier to, and patient suffering is little, when lachrymal sac portion has arrived after human body lachrymal sac, elastic yarn recovers original state expanding, and effectively struts lachrymal sac portion, and can mucosa not produced and be stimulated; This Lacrimal passage tube has very good drainage effect, by the drain gap between elastic yarn, tear is introduced into nasolacrimal duct, and drain is thorough, without remaining tear, puts and stays in lachrymal sac.
Accompanying drawing explanation
Fig. 1 be prior art in Lacrimal passage tube.
Fig. 2 is the first embodiment of Lacrimal passage tube of the present utility model.
Fig. 3 is the second embodiment of Lacrimal passage tube of the present utility model.
Fig. 4 is the sectional view at the A-A place in Fig. 2.
Fig. 5 is the sectional view at the B-B place in Fig. 2.
Number in the figure is described as follows:
1 lachrymal sac portion
2 nasolacrimal ducts
3 lachrymal sac portions
31 retainer rings
32 elastic yarns
33 drain gaps
4 nasolacrimal ducts
41 connection tubes
42 nasal cavity pipes
5 tinsels
6 layer of silica gel
7 metal tubes
8 layer of silica gel
The specific embodiment
In order more clearly to understand technology contents of the present utility model, especially exemplified by following examples, describe in detail.
This Lacrimal passage tube, comprise that 3 nasolacrimal duct 4 these lachrymal sac portions 3 of lachrymal sac portion are in the upper end of this nasolacrimal duct 4, lachrymal sac portion 3 comprises at least three elastic yarns 32, the lower end of this elastic yarn 32 is fixedly connected with the upper end of nasolacrimal duct 2, the upper end of elastic yarn 32 is fixedly connected with retainer ring 31, and elastic yarn 32 is along the circumferential distribution of this retainer ring 31, and elastic yarn 32 and the formed inner space of retainer ring 31 are lachrymal sac portion 3, between elastic yarn 32 and adjacent elastic yarn 32, form drain gap 33; Elastic yarn 32 is arc, and this elastic yarn 32 is tinsel 5, and the surface of this elastic yarn 32 is provided with layer of silica gel 6, specifically refers to Fig. 4.
Refer to Fig. 2, in the first embodiment of the present utility model, elastic yarn 32 and retainer ring 31 form the lachrymal sac portion 1 of spheroids, and the cross-sectional diameter at the cross-sectional diameter at lachrymal sac portion 1 nearly retainer ring 31 places and lachrymal sac portion 3 nearly nasolacrimal duct 4 places is all less than the cross-sectional diameter of these lachrymal sac portion 3 mid portions.
Refer to Fig. 3, in the second embodiment of the present utility model, elastic yarn 32 and retainer ring 31 form the lachrymal sac portion 3 of tapers, and the cross-sectional diameter at lachrymal sac portion 3 nearly retainer ring 31 places is greater than the cross-sectional diameter at lachrymal sac portion 3 nearly nasolacrimal duct 4 places; Or the cross-sectional diameter at lachrymal sac portion 3 nearly retainer ring 31 places is less than the cross-sectional diameter at lachrymal sac portion 3 nearly nasolacrimal duct 4 places.
Tinsel 5 is memory wire, and memory wire is Nitinol, ormolu, Batterium, copper Mo-Ni alloy or copper gold kirsite; Nasolacrimal duct is metal tube 7, and the inner surface of this nasolacrimal duct 4 and outer surface be provided with layer of silica gel 8, specifically refers to Fig. 5, and retainer ring 31 is becket, and the surface of this retainer ring 31 is provided with layer of silica gel.
Standing unpractical Lacrimal passage tube as shown in Figures 2 and 3, lachrymal sac portion 3 has the shape of expanding, lachrymal sac portion 3 is positioned in the lachrymal sac of human body, lachrymal sac portion 3 can be so that lachrymal sac struts, and because lachrymal sac of the present utility model portion 3 consists of many elastic yarns 32, lachrymal sac portion 3 is very good with the lachrymal sac laminating of human body, when implanting, because elastic yarn 32 has elasticity, when the lacrimal passage of human bodies passes through in lachrymal sac portion 3, be subject to the power of lacrimal passage extruding, elastic yarn 32 is straightened by arc, thereby when patient is implanted, misery is less, the diameter of human body lachrymal sac is greater than the diameter of lacrimal passage, lachrymal sac place when lachrymal sac portion 3 arrival human bodies, because elastic yarn 32 is memory metal, elastic yarn 32 returns to the original state expanding, thereby fit with human body lachrymal sac, and play the effect that struts lachrymal sac, because the surface of elastic yarn 32 is layer of silica gel 6, therefore can mucosa not produced and be stimulated, use comparatively comfortable, drain gap 33 is introduced into tear in nasolacrimal duct 4, because this Lacrimal passage tube is introduced tear by drain gap 33, drainage effect is obviously due to traditional single opening, and tear drainage is thorough, the implantation of lachrymal sac portion 1 is non-directional, it is comparatively convenient that doctor implants, and nasolacrimal duct 2 is without conduction hole is set.Elastic yarn 32 and nasolacrimal duct 4 are metal material, and outsourcing silica gel, thereby existing good support effect can not injure again the mucosa of human body.
Adopted the Lacrimal passage tube of this structure, lachrymal sac portion has adopted the material of memory metal, when implanting, elastic yarn receives that lacrimal passage extruding straightens, thereby make to implant, is easier to, and patient suffering is little, when lachrymal sac portion has arrived after human body lachrymal sac, elastic yarn recovers original state expanding, and effectively struts lachrymal sac portion, and can mucosa not produced and be stimulated; This Lacrimal passage tube has very good drainage effect, by the drain gap between elastic yarn, tear is introduced into nasolacrimal duct, and drain is thorough, without remaining tear, puts and stays in lachrymal sac.
In this description, this utility model is described with reference to its specific embodiment.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, description and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (7)
1. a Lacrimal passage tube, it is characterized in that, comprise lachrymal sac portion and nasolacrimal duct, this lachrymal sac portion is positioned at the upper end of this nasolacrimal duct, described lachrymal sac portion comprises at least three elastic yarns, the lower end of this elastic yarn is fixedly connected with the upper end of described nasolacrimal duct, the upper end of described elastic yarn is fixedly connected with retainer ring, and described elastic yarn is along the circumferential distribution of this retainer ring, described elastic yarn and the formed inner space of described retainer ring are described lachrymal sac portion, between described elastic yarn and adjacent elastic yarn, form drain gap; Described elastic yarn is arc, and this elastic yarn is tinsel, and the surface of this elastic yarn is provided with layer of silica gel.
2. Lacrimal passage tube according to claim 1, it is characterized in that, described nasolacrimal duct is hollow pipe, described nasolacrimal duct comprises connection tube and nasal cavity pipe, this connection tube is positioned at the top of described nasolacrimal duct, this nasal cavity pipe is positioned at the bottom of described nasolacrimal duct, and described connection tube and described nasal cavity pipe are integrated setting.
3. Lacrimal passage tube according to claim 1, it is characterized in that, described elastic yarn and described retainer ring form the lachrymal sac portion of spheroid, and the cross-sectional diameter at the cross-sectional diameter at the described nearly described retainer ring place of lachrymal sac portion and the described nearly nasolacrimal duct of lachrymal sac portion place is all less than the cross-sectional diameter of this lachrymal sac portion mid portion.
4. Lacrimal passage tube according to claim 1, it is characterized in that, the lachrymal sac portion that described elastic yarn and described stationary annular are tapered, and the cross-sectional diameter at the nearly described retainer ring place of described lachrymal sac portion is greater than the cross-sectional diameter at the described nearly nasolacrimal duct of lachrymal sac portion place; Or the cross-sectional diameter at the described nearly described retainer ring place of lachrymal sac portion is less than the cross-sectional diameter at the described nearly nasolacrimal duct of lachrymal sac portion place.
5. Lacrimal passage tube according to claim 1, is characterized in that, described tinsel is memory wire.
6. Lacrimal passage tube according to claim 2, is characterized in that, described nasolacrimal duct is metal tube, and the inner surface of this nasolacrimal duct and outer surface are provided with layer of silica gel.
7. Lacrimal passage tube according to claim 1, is characterized in that, described retainer ring is becket, and the surface of this retainer ring is provided with layer of silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539204.3U CN203436452U (en) | 2013-08-30 | 2013-08-30 | Lacrimal passage catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539204.3U CN203436452U (en) | 2013-08-30 | 2013-08-30 | Lacrimal passage catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203436452U true CN203436452U (en) | 2014-02-19 |
Family
ID=50087530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320539204.3U Expired - Fee Related CN203436452U (en) | 2013-08-30 | 2013-08-30 | Lacrimal passage catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203436452U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103405307A (en) * | 2013-08-30 | 2013-11-27 | 潘东艳 | Catheter for lacrimal passage |
| CN103815986A (en) * | 2014-02-27 | 2014-05-28 | 曾晨光 | Artificial nasolacrimal duct |
| WO2024080523A1 (en) * | 2022-10-11 | 2024-04-18 | 의료법인 성광의료재단 | Tear duct surgical instrument capable of directly removing lesions within tear drainage passage and surgical device comprising same |
-
2013
- 2013-08-30 CN CN201320539204.3U patent/CN203436452U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103405307A (en) * | 2013-08-30 | 2013-11-27 | 潘东艳 | Catheter for lacrimal passage |
| CN103815986A (en) * | 2014-02-27 | 2014-05-28 | 曾晨光 | Artificial nasolacrimal duct |
| CN103815986B (en) * | 2014-02-27 | 2016-08-17 | 广州新诚生物科技有限公司 | Artificial nasolacrimal canal |
| WO2024080523A1 (en) * | 2022-10-11 | 2024-04-18 | 의료법인 성광의료재단 | Tear duct surgical instrument capable of directly removing lesions within tear drainage passage and surgical device comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20180830 |